JP7622995B2 - Stove - Google Patents

Description

The present invention relates to a stove.

Conventionally, stoves are known that display the flame power in response to the rotational position of an operating knob that can adjust the amount of fuel supplied to the stove burner. The gas stove disclosed in Patent Document 1 has a light passing section that passes light from the light-emitting section forward at a predetermined portion corresponding to the rotational position of the operating knob. The light that passes through the light passing section is emitted forward via a light-transmitting section provided in a decorative panel provided on the front portion of the housing. With this configuration, the light-transmitting section displays the flame power by lighting up a portion corresponding to the current flame power.

JP 2019-27659 A

It is being considered to provide a light-guiding member on the outer surface of the ignition/extinguishing button used to ignite and extinguish the burner, and to display the flame power by illuminating the light-guiding member. However, because the ignition/extinguishing button is a part that is frequently operated by the user, there is a problem in that the light-guiding member may shift from its original position due to long-term use, etc.

The present invention was made to solve these problems, and aims to provide a stove that can prevent the light guide member from shifting out of position even when the light guide member is attached to the ignition/extinguishing button.

A stove according to a first aspect of the present invention is used for igniting and extinguishing a burner, and is equipped with an ignition/extinguishing button that protrudes forward from a front panel at least after the ignition operation is completed, the ignition/extinguishing button comprises a main body member, a light-guiding member that emits light upon receiving light irradiated from a light-emitting portion, and a regulating member that regulates misalignment of the light-guiding member with respect to the main body member, the main body member comprises a front plate portion that is circular in front view, and a cylindrical body portion that extends rearward from a peripheral portion of the front plate portion, the body portion is provided with an engagement hole, the light-guiding member comprises an attachment portion that is attached to a rear end portion of the body portion, and an extension portion that extends forward from the attachment portion and is positioned on the outer circumferential surface of the body portion, the attachment portion having a ribbed portion that is tucked radially inward of the body portion relative to the extension portion, the regulating member has a cylindrical insertion portion inserted into the barrel from the rear opening of the main body member and a flange portion extending radially outward from the rear end of the insertion portion, the insertion portion has an engagement portion that engages with the engagement hole, and when the mounting portion is attached to the rear end of the barrel from the rear, the light guiding member positions the extension portion on the outer peripheral surface of the barrel and abuts the reverse flange portion against the rear end of the barrel, and when the insertion portion is inserted into the barrel of the main body member and pushed in to a position where the engagement portion engages with the engagement hole, the regulating member clamps the reverse flange portion between the flange portion and the rear end of the barrel in the front-to-rear direction.

The stove according to claim 2 is characterized in that, in addition to the configuration described in claim 1, it is provided with a rotation restriction means that restricts the light guide member from rotating in the circumferential direction relative to the body.

The stove according to claim 3 has the configuration according to claim 2, and further has a plurality of recesses formed at equal intervals in the circumferential direction at the rear end of the body, recessed radially inward from the outer circumferential surface of the body, a plurality of extensions are provided corresponding to the shapes of the recesses, and can be inserted from the rear to the front inside the recesses, the attachment portion covers the rear end of the body in an annular shape, and connects the rear portions of the extensions in the circumferential direction so as to be spaced at the same intervals as the recesses, and the recesses and the extensions function as the rotation restricting means.

The stove according to claim 4 has the configuration described in claim 3, and in addition, the burner is configured such that the ignition/extinction button is rotated in a position protruding forward from the front panel when the burner is in a combustion state to adjust the amount of gas supplied to the burner, and the outer peripheral surface of the body is provided in front of each of the plurality of recesses with a circumferential width corresponding to the width of each of the plurality of recesses and a surface direction facing radially outward, extending in the front-rear direction.

The stove according to claim 5 has the configuration according to any one of claims 1 to 4, and is characterized in that the engagement hole and the engagement portion are located rearward of the front surface of the front panel when the ignition/extinguishing button protrudes forward of the front panel.

In the stove of claim 1, the mounting portion of the light guide member is attached from the rear of the body to the outer peripheral surface of the rear end side, so that the reverse flange portion of the light guide member is clamped in the front-rear direction between the flange portion and the rear end of the body. In this way, the positional deviation of the light guide member in the front-rear direction relative to the main body member is restricted. With such an extremely simple configuration, the stove can prevent the positional deviation of the light guide member.

The stove according to claim 2 has the same effect as the invention described in claim 1, and the rotation restriction means prevents the light guide member from shifting in the circumferential direction relative to the main body member.

In addition to the effect of the invention described in claim 2, the stove according to claim 3 restricts the circumferential rotation of the light guide member by inserting each of the multiple extensions of the light guide member into multiple recesses provided at the rear end of the barrel of the main body member. With this extremely simple configuration, the stove can prevent the light guide member from shifting in the circumferential direction.

In addition to the effects of the invention described in claim 3, the stove according to claim 4 has improved operability because the on/off button is less likely to slip when rotated. Also, the multiple extensions and flat parts located in the recess give the impression of extending in a line in the front-to-back direction, improving the aesthetics.

The stove according to claim 5 has the effect of any one of claims 1 to 4, and also prevents the engagement hole and engagement part from being seen by the user when the ignition/extinction button is used, which prevents the aesthetic appearance of the stove from being disturbed.

FIG. FIG. 2 is a perspective view of the fuel supply device 20. FIG. 13 is an exploded perspective view of the panel device 9B. 2 is an exploded perspective view of the operation knob 13 as viewed diagonally from the front right. FIG. 2 is an exploded perspective view of the operation knob 13 as viewed diagonally from the rear right. FIG. 11 is an explanatory diagram illustrating a state in which the operation knob 13 is in a standby position. FIG. 10 is an explanatory diagram illustrating the operating principle of the heat power display on the operation knob 13. FIG. FIG. 8 is an explanatory diagram in which the panel device 9B is omitted from FIG. 7. 8 is a cross-sectional view of the panel device 9B and the fuel supply device 20 in FIG. 7 as viewed from the left.

The following describes an embodiment of the present invention. Unless otherwise specified, the device structure described below is not intended to be limiting, but is merely an explanatory example. The drawings are used to explain the technical features that may be adopted by the present invention. In the following description, the left and right, front and back, and up and down are indicated by arrows in the drawings.

The stove 1 will be described with reference to FIG. 1. The stove 1 is a built-in type gas stove. The stove 1 comprises a housing 2 and a top plate 3. The housing 2 is formed in a generally rectangular parallelepiped shape with an opening at the top. The top plate 3 is installed at the opening of the housing 2. The top plate 3 is provided with a right burner 4 at the front right portion, a left burner 5 at the front left portion, and a rear burner 6 at the center portion. At the rear of the top plate 3, an exhaust port 7 is provided to exhaust combustion exhaust gas generated inside the grill chamber (not shown) installed inside the housing 2 to the outside when the grill chamber is in use.

A grill door 8 is provided in the approximate center of the front of the stove 1 to open and close the front opening of the grill chamber. In the area to the right of the grill door 8, two circular operation knobs 11, 12 are provided side by side in the left-right direction when viewed from the front. In the area to the left of the grill door 8, two operation knobs 13, 14 of the same shape are provided side by side in the left-right direction at the same height as the operation knobs 11, 12. The operation knobs 11, 12, 13, 14 are provided to ignite, extinguish, and adjust the flame power of the right burner 4, the grill burner (not shown) in the grill chamber, the rear burner 6, and the left burner 5, respectively.

The fuel supply device 20 will be described with reference to FIG. 2. The stove 1 is provided with three fuel supply devices 20 inside the housing 2, which supply gas as fuel to the right burner 4, the left burner 5, and the back burner 6, respectively. The operation knobs 11, 13, and 14 are attached to the front end of the fuel supply devices 20, respectively. The stove 1 is also provided with a fuel supply device (not shown) inside the housing 2 that supplies gas to the grill burner. In addition to the configuration of the fuel supply device 20, the fuel supply device that supplies gas to the grill burner is equipped with an electromagnetic valve for switching the flame power of the grill burner between low and high flame power, a governor device for adjusting the gas pressure supplied to the grill burner, etc. The operation knob 12 is attached to the front end of the fuel supply device that supplies gas to the grill burner. The fuel supply device that supplies gas to the grill burner will not be described. Below, the fuel supply device 20 that supplies gas to the back burner 6 and the operation knob 13 corresponding to the fuel supply device 20 that supplies gas to the back burner 6 will be described. The display of the flame power of the rear burner 6 on the operation knob 13, which will be described later, realized by the present invention is performed in the same way as the display of the flame power of the right burner 4, grill burner, and left burner 5 on the operation knobs 11, 12, and 14. In the following, the right burner 4, left burner 5, rear burner 6, and grill burner are collectively referred to simply as "burners."

The operation knob 13 has a cylindrical body member 131 extending in the front-rear direction, which has a front plate portion 134, which is a circular flat portion in front view covering the front end, and a cylindrical body portion 132 extending rearward from the peripheral portion of the front plate portion 134. The fuel supply device 20 ignites and extinguishes the rear burner 6 in response to the pushing operation of the operation knob 13, and adjusts the amount of gas supplied to the rear burner 6 in response to the turning operation of the operation knob 13. The pushing operation is an operation of pushing the operation knob 13 rearward and pushing the front plate portion 134 of the operation knob 13 rearward from the front face F of the housing 2 of the stove 1 (the front face of the decorative panel 80 of the panel device 9B, see FIG. 1). The turning operation is an operation of pinching the body portion 132 of the operation knob 13 with fingers or the like and rotating the operation knob 13 around an axis (axis center AX) extending in the front-rear direction.

The fuel supply device 20 includes a push-push mechanism 24, a gas flow passage 22, a flame adjustment cam 26, a flow rate adjustment section 31, a connecting member 25, a medium flame guide 90, and the like. The push-push mechanism 24 is a known mechanism, and in this embodiment, it is used to position the operation knob 13 at each of the standby position, the pushed-in position, and the operation position, and to maintain the main valve (not shown) described later in an open or closed state according to each position. The standby position is a position where the front plate portion 134 of the operation knob 13 is approximately at the same position in the front-rear direction as the front face F of the housing 2 of the stove 1 (see FIG. 6). In the standby position, the front plate portion 134 of the operation knob 13 may be located slightly rearward of the front face F, or may be located slightly forward of the front face F. The pushed-in position is a position where the front plate portion 134 of the operation knob 13 is pushed rearward of the front face F (not shown). In the pushed-in position, the operation knob 13 is located rearward of the standby position. The operating position is a position where the rear end of the operating knob 13 is located behind the front face F and where most of the main body member 131 of the operating knob 13 protrudes forward from the front face F (see Figures 7 to 9). In the operating position, the operating knob 13 is located forward of the standby position. When in the operating position, the operating knob 13 can be rotated around the axis AX.

The push-push mechanism 24 includes a slider 40 that moves forward and backward in response to the pushing operation of the operating knob 13, a spring (not shown) that pushes the slider 40 back forward, and a valve drive unit (not shown) that drives the main valve. Each time the operating knob 13 is pushed, the slider 40 repeats the operation of moving the operating knob 13 from the standby position to the pushed-in position to the operating position, and the operation of moving from the operating position to the pushed-in position to the standby position. The valve drive unit opens the main valve in conjunction with the operation of the operating knob 13 moving from the standby position to the operating position, and maintains it in an open state, and closes the main valve in conjunction with the operation of the operating knob 13 moving from the operating position to the standby position, and maintains it in a closed state.

The gas flow passage section 22 is connected to the rear side of the push-push mechanism 24. A first gas passage (not shown) is formed inside the gas flow passage section 22. The first gas passage passes gas supplied from a gas supply pipe (not shown) connected to an inlet 23 opening at the bottom to the flow rate adjustment section 31. A safety valve (not shown) and a main valve (not shown) are provided in the first gas passage. The safety valve is an electromagnetically operated valve that is elastically biased to a closed state that closes the first gas passage. The main valve is a valve that opens and closes the first gas passage in response to the pushing operation of the operating knob 13. Note that the main valve and the safety valve are well known, so a detailed explanation of their operation will be omitted.

The flow rate adjustment unit 31 is provided above the push-push mechanism 24 and the gas flow path unit 22. A second gas passage (not shown) is formed inside the flow rate adjustment unit 31. The second gas passage passes gas supplied from the gas flow path unit 22 and supplies it to the rear burner 6 via a gas supply pipe (not shown) connected to an outlet (not shown) that opens at the top. Although not shown, a governor device is provided above the fuel supply device that supplies gas to the grill burner, and gas flowing out from the outlet is introduced into the governor device. The governor device adjusts the pressure of the gas introduced inside and supplies it to the grill burner.

A hole 30 communicating with the second gas passage is formed at the front end of the flow rate adjustment section 31, and a needle valve 28 is inserted into the hole 30. The front end of the needle valve 28 is exposed to the outside from the hole 30, and the rear end is arranged within the second gas passage so as to be movable in the front-rear direction. A pin 29 extending in the vertical direction is provided at the front end of the needle valve 28.

The flame adjustment cam 26 is formed in a roughly semi-cylindrical shape and is provided so as to be rotatable around the axis AX so as to cover the upper front end of the push-push mechanism 24. The flame adjustment cam 26 is restricted from moving in the front-rear direction. A cam groove 27 is provided on the outer periphery of the flame adjustment cam 26. The cam groove 27 is formed in a spiral shape centered on the axis AX. The lower end of a pin 29 provided on a needle valve 28 engages with the cam groove 27. When the flame adjustment cam 26 rotates, the cam groove 27 guides the pin 29, moving the needle valve 28 in the front-rear direction.

The flame adjustment cam 26 has an extension 34 extending forward, and has teeth 35 protruding inward at the front end of the extension 34. When the operation knob 13 is in the operating position, the teeth 35 mesh with teeth 38 (described later) of the connecting member 25, and the flame adjustment cam 26 rotates around the axis AX together with the operation knob 13 via the connecting member 25. A cylindrical body operating member 36 is fixed to the outer circumferential surface of the extension 34. The cylindrical body operating member 36 has an engagement piece 36B extending forward. The cylindrical body operating member 36 engages with the cylindrical body 70 (described later) and rotates the cylindrical body 70 together with the flame adjustment cam 26 around the axis AX. The extension 34 has a tapered portion 34A that narrows midway. When the operating knob 13 is pressed, the tapered portion 34A engages with the medium heat guide 90 and rotates the medium heat guide 90.

The connecting member 25 extends forward from the slider 40 of the push-push mechanism 24 and engages with the shaft body 37 whose axis is the axis AX. The connecting member 25 is held at the front end of the shaft body 37 and is provided so as to be movable in the front-rear direction together with the slider 40 while being rotatable around the shaft body 37 about the axis AX. The operation knob 13 is held at the tip 25A of the connecting member 25 and is provided so as to be movable in the front-rear direction together with the connecting member 25 and rotatable about the axis AX. The connecting member 25 has a tooth portion 38 on the outer circumferential surface of the rear end, which has a plurality of teeth 38A that mesh with the tooth portion 35 of the flame adjustment cam 26. When the operation knob 13 is in the operating position, the tooth portion 38 of the connecting member 25 meshes with the tooth portion 35 of the flame adjustment cam 26, connecting the operation knob 13 and the flame adjustment cam 26. When the operating knob 13 is not in the operating position, the teeth 35 of the flame adjustment cam 26 are located in front of the teeth 38 of the connecting member 25 and do not engage with the teeth 38, releasing the connection between the operating knob 13 and the flame adjustment cam 26.

The medium flame guide 90 is disposed on the rear side of the connecting member 25. The medium flame guide 90 is fixed to the shaft body 37 of the slider 40 and is arranged so as to be movable in the front-rear direction together with the slider 40. The medium flame guide 90 has a fixed portion 91, a half flange portion 92, and a guide portion 93. The fixed portion 91 is cylindrical and fixes the medium flame guide 90 to the shaft body 37. The half flange portion 92 protrudes radially outward from the lower part of the front end portion of the fixed portion 91 in the shape of a flange. The connecting member 25 is arranged so as to be rotatable relative to the front surface of the half flange portion 92.

The guide portion 93 is generally cylindrical, and the inner surface of the rear end of the lower portion is connected to the outer periphery of the half flange portion 92. The upper portion of the guide portion 93 is made larger in diameter than the lower portion, and an opening 94 is formed between the inner surface of the rear end and the upper portion of the front end of the fixing portion 91. The tapered portion 34A of the extension portion 34 of the flame adjustment cam 26 is inserted into the opening 94. The inner diameter of the lower portion of the guide portion 93 is larger than the maximum diameter of the teeth portion 38 of the connecting member 25. In addition, a guide protrusion 95 is provided on the upper surface of the upper portion of the guide portion 93. The guide protrusion 95 engages with a groove portion 36A provided on the lower surface of the cylindrical body operating member 36.

The following describes how the rear burner 6 is ignited and extinguished, and how the flame power is adjusted by pushing and rotating the control knob 13. When the rear burner 6 is extinguished, the control knob 13 is in the standby position. When the user of the stove 1 pushes in the control knob 13 from the standby position, the safety valve and main valve are opened as the control knob 13 moves to the pushed-in position, and the rear burner 6 is ignited by an igniter (not shown). When the user releases the control knob 13 from the pushed-in position, the spring of the push-push mechanism 24 pushes the slider 40 back forward, and the control knob 13 moves to the operating position. The safety valve and main valve are maintained in an open state. The control knob 13 and the flame power adjustment cam 26 are connected by a connecting member 25.

When the operating knob 13 in the operating position is rotated, the teeth 38 of the connecting member 25 mesh with the teeth 35 of the flame adjustment cam 26, and the flame adjustment cam 26 rotates around the axis AX together with the operating knob 13. When the flame adjustment cam 26 rotates, the pin 29 of the needle valve 28 is guided by the cam groove 27 and moves in the front-rear direction. This causes the needle valve 28 to move in the front-rear direction. Depending on the position of the needle valve 28, the flow rate of gas flowing through the second gas passage is adjusted, and the flame power of the rear burner 6 is changed.

When the user pushes the operation knob 13 in the operating position, the safety valve and the main valve are closed in the process of the operation knob 13 moving to the pushed-in position. The rear burner 6 is extinguished. When the user releases the operation knob 13 in the pushed-in position, the spring of the push-push mechanism 24 pushes the slider 40 back forward, and the operation knob 13 moves to the standby position. The safety valve and the main valve are maintained in a closed state. That is, in this embodiment, the operation of pushing the operation knob 13 in the standby position to move it to the pushed-in position corresponds to the ignition operation of the burner. The operation of pushing the operation knob 13 in the operating position to move it to the pushed-in position corresponds to the extinguishing operation of the burner. In addition, the operation knob 13 is placed in the operating position from the end of the ignition operation until the start of the extinguishing operation, that is, while the burner is in a burning state. The operation knob 13 is placed in the standby position from the end of the extinguishing operation until the start of the ignition operation.

In this way, as the operating knob 13 in the operating position is rotated, the connecting member 25 rotates the flame adjustment cam 26. The rotating flame adjustment cam 26 moves the needle valve 28, thereby continuously adjusting the flow rate of gas flowing through the second gas passage of the flow rate adjustment unit 31. That is, the connecting member 25 adjusts the amount of gas supplied to the rear burner 6 according to the amount of rotation of the operating knob 13, and the flame power of the rear burner 6 changes according to the amount of gas supplied to the rear burner 6. The same applies to the ignition and extinguishing of the right burner 4, grill burner, and left burner 5, and the adjustment of the flame power, by pressing and rotating the operating knobs 11, 12, and 14.

Next, the panel device 9B will be described. The stove 1 is equipped with a panel device 9A in the area to the right of the grill door 8, and a panel device 9B in the area to the left of the grill door 8 (see FIG. 1). The panel devices 9A and 9B are provided to arrange the operation knobs 11-14 on the front surface F of the housing 2. The panel devices 9A and 9B are fixed to the housing 2 in front of the fuel supply device 20, and together with the grill door 8, form the front surface F of the housing 2.

Panel device 9B will be described with reference to FIG. 3. The configuration of panel device 9B related to the heat display on operation knob 13 is the same as that of operation knob 14. Also, the configuration of panel device 9A related to the heat display on operation knobs 11 and 12 is the same as that of panel device 9B, so a description thereof will be omitted.

The panel device 9B includes a panel main body 50, a light source board 60, a cylindrical body 70, and a decorative panel 80. The panel main body 50 is attached to the front end of the housing 2. The lower part 51 of the panel main body 50 is formed in a box shape, and an operation panel (not shown) is housed therein for the user to input the selection of heat control according to the cooking contents, set the timer, etc. The upper part 52 of the panel main body 50 protrudes upward from the lower part 51 in a plate shape. The upper part 52 has two through holes 53 formed side by side in the left-right direction, penetrating in the front-rear direction. At the top of the two through holes 53, a notch 54 is formed that penetrates the upper part 52 of the panel main body 50 in a rectangular shape in the front-rear direction, similar to the through holes 53. The inner diameter of the through hole 53 is larger than the outer diameter of the operation knobs 13 and 14. The fuel supply device 20 of the rear burner 6 is fixed to the upper part 52 of the panel main body 50 from the rear side. The connecting member 25 and the operation knob 13 of the fuel supply device 20 of the rear burner 6 are arranged inside the through hole 53 on the right side. The fuel supply device 20 of the left burner 5 is arranged next to the left side of the fuel supply device 20 of the rear burner 6 and is fixed from the rear side to the upper part 52 of the panel main body 50 (not shown).

A light source board 60 is fixed to the rear surface of the upper portion 52. The light source board 60 is a board in which a mounting surface on which a plurality of LEDs 61 (see Figures 8 and 9) that serve as light sources are mounted is formed in a generally rectangular shape that is long in the left-right direction. The light source board 60 is held by a board holder 62 that holds the light source board 60. The board holder 62 is fixed to the rear surface of the upper portion 52 at a position above the through-hole 53 by a plurality of screws 63.

The decorative panel 80 is a plate-like body that is attached to the front side of the upper portion 52 of the panel main body 50. The decorative panel 80 has two openings 86 that penetrate in the front-rear direction, and a translucent portion 81 that is disposed above each opening 86. The decorative panel 80 is generally rectangular in front view, and has a slide lock 85 at its upper end. When the slide lock 85 is slid to the right while the decorative panel 80 is attached to the upper portion 52 of the panel main body 50, the decorative panel 80 is fixed to the panel main body 50.

The two openings 86 are formed side by side in the left-right direction. The inner diameters of the two openings 86 are larger than the outer diameters of the operation knobs 13, 14. The operation knobs 13, 14 are disposed in the two openings 86, respectively. The translucent portion 81 is provided in front of the light source board 60 when the decorative panel 80 is attached to the upper portion 52 of the panel main body 50.

The cylindrical body 70 will be described in detail with reference to Figures 2 and 3. The cylindrical body 70 includes a main body 71 and a flange 76. The main body 71 is cylindrical and extends in the front-rear direction. The outer diameter of the main body 71 is smaller than the inner diameter of the through hole 53 of the panel main body 50. The inner diameter of the main body 71 is larger than the outer diameter of the operation knobs 11, 12, 13, and 14 (see Figure 3). A light passing portion 77 is formed at the front end of the main body 71. The light passing portion 77 is a portion in which approximately half of the front end of the main body 71 is cut out rearward by a specified width.

The flange portion 76 is formed in a flange shape radially outward at a portion of the front end of the main body portion 71 where the light passing portion 77 is not provided. The main body portion 71 has hook pieces 75 at two circumferential positions (see FIG. 2) that are hooked from the rear side to the edge of the through hole 53 of the panel main body portion 50. The flange portion 76 abutting the front surface of the edge of the through hole 53 and the hook pieces 75 prevent the cylindrical body 70 from coming off when the main body portion 71 is placed in the through hole 53, and the cylindrical body 70 is held rotatably around the axis AX within the through hole 53. An engagement portion 74 is provided at a position between the two hook pieces 75 in the main body portion 71. The engagement portion 74 engages with the engagement piece 36B (see FIG. 2) provided at the tip of the cylindrical body operating member 36. In the main body portion 71, the portions that sandwich the engagement portion 74 from both sides in the circumferential direction each extend rearward, making it difficult for the engagement piece 36B to come off.

The operation knob 13 will be described in detail with reference to FIG. 4 and FIG. 5. The operation knob 13 includes a main body member 131, a light guide member 136, and a regulating member 139. The main body member 131 includes a plurality of recesses 142A on the outer periphery of the rear end 133 of the body 132. Each of the recesses 142A is recessed radially inward of the body 132 with respect to the outer periphery of the body 132. Each of the recesses 142A is formed at equal intervals in the circumferential direction of the body 132 at the rear end 133 of the body 132. Each of the recesses 142A extends forward from the rear end 133 of the body 132 in a comb-tooth shape. The rear ends of the recesses 142A are connected to the rear ends of the adjacent recesses 142A. That is, the recesses 142A are connected at the rear end of the body 132 to form one recess 142.

In front of each of the multiple recesses 142A, a flat surface 143 is provided whose width in the circumferential direction of the body 132 corresponds to the width of each of the multiple recesses 142A. Each of the flat surface portions 143 is arranged at equal intervals in the circumferential direction of the body 132 with its normal line aligned along the radial direction of the body 132. In other words, in the body 132, the multiple flat surface portions 143 are provided so that they extend in the front-to-rear direction with their surfaces facing radially outward of the body 132.

The body 132 has an engagement hole 141, which is a hole that penetrates the body 132 at the rear end 133 of the body 132. In this embodiment, three engagement holes 141 are provided at equal intervals in the circumferential direction of the body 132. Each of the three engagement holes 141 is provided in a portion of the recess 142 where multiple recesses 142A are connected to each other.

The light guide member 136 is made of a light guide material. The light guide member 136 can be made of a material that is transparent and can guide light, such as an acrylic resin. A plate-shaped body made of a light guide material guides light to any part or the entire surface of the plate-shaped body by diffusing light incident from an end face (small edge) of the plate-shaped body inside. The light guide member 136 includes an attachment portion 137 and an extension portion 138. The attachment portion 137 is an annular shape having an inner diameter approximately equal to the outer diameter of the rear end portion 133 of the body portion 132 of the main body member 131. The extension portion 138 includes a plurality of protrusions 138A that protrude forward from the attachment portion 137 at equal intervals in a comb-tooth shape. As will be described later with reference to FIGS. 7 to 9, when the operation knob 13 is in the operation position, the attachment portion 137 is arranged behind the upper portion 52 of the panel main body portion 50 (behind the front surface of the decorative panel 80). When the operation knob 13 is in the operating position, most of the extension portion 138, except for the portion adjacent to the mounting portion 137, is positioned forward of the decorative panel 80 (forward of the front surface F of the housing 2).

The mounting portion 137 and the extension portion 138 are both outer peripheral surfaces of a plate-shaped body formed of a light-guiding material. The plate-shaped body using the light-guiding material used in the light-guiding member 136 is configured so that when light is incident from the end face, the incident light is guided to the entire surface, and the entire surface emits light uniformly. The light-guiding member 136 is assembled to the rear end portion 133 of the body portion 132 of the main body member 131. The number of protrusions 138A is the same as the number of teeth 38A of the tooth portion 35 of the connecting member 25. Therefore, the user can easily match the amount of rotation of the operation knob 13 with the amount of rotation of the tooth portion 38 of the flame adjustment cam 26 during the rotation operation. In addition, the number of the multiple flat portions 143 in the body portion 132 of the main body member 131 is the same as the number of protrusions 138A in the extension portion 138. In addition, the mounting portion 137 is provided with a reverse flange portion 151. The reverse flange portion 151 is a portion that protrudes radially inward from the rear end of the mounting portion 137.

The restricting member 139 is a member that restricts the light guide member 136 attached to the main body member 131 from being misaligned with respect to the main body member 131, and that holds the operation knob 13 at the tip portion 25A of the connecting member 25. The restricting member 139 includes a tubular portion 161, a front portion 164, a flange portion 162, an engagement portion 163, and a holding portion 165. The tubular portion 161 is cylindrical with an outer diameter smaller than the inner diameter of the trunk portion 132 of the main body member 131. The front portion 164 is a surface portion that is circular in front view and is provided at the front end portion of the tubular portion 161. The length from the rear end portion of the tubular portion 161 to the front portion 164 is slightly shorter than the length of the main body member 131 in the front-rear direction. The flange portion 162 is a portion that protrudes from the rear end portion of the tubular portion 161 radially outward of the tubular portion 161. The engaging portion 163 is a hook-shaped portion that protrudes slightly radially outward from the rear of the outer circumferential surface of the cylindrical portion 161. In this embodiment, three engaging portions 163 are provided at equal intervals in the circumferential direction of the cylindrical portion 161. The retaining portion 165 is a shaft-shaped portion that extends rearward from the center of the rear surface of the front portion 164. The retaining portion 165 is a portion for insertion into a hole 25B (see FIG. 5) provided in the tip portion 25A of the connecting member 25.

The shape of each of the multiple protrusions 138A in the extension portion 138 of the light guide member 136 corresponds to the shape of each of the multiple recesses 142A in the recess 142 of the main body member 131. The mounting portion 137 of the light guide member 136 connects the rear portions of each of the multiple protrusions 138A so that the circumferential spacing of the multiple recesses 142A in the recess 142 of the main body member 131 and the spacing of each of the multiple protrusions 138A are the same. When the light guide member 136 is inserted from the rear into the inside of the recess 142 of the main body member 131, each of the multiple protrusions 138A of the extension portion 138 is inserted from the rear toward the front into each of the multiple recesses 142A. Therefore, the light guide member 136 is restricted from rotating in the circumferential direction of the trunk portion 132 relative to the trunk portion 132 of the main body member 131. In this state, the mounting portion 137 of the light guide member 136 annularly covers the outer periphery of the rear end portion 133 of the body portion 132.

The front surface 164 and the cylindrical portion 161 of the regulating member 139 are inserted from the rear into the inside of the barrel 132 of the main body member 131 in which the light guide member 136 has been inserted into the recess 142. At this time, the regulating member 139 is inserted into the barrel 132 so that the three engagement holes 141 in the barrel 132 of the main body member 131 and the three engagement portions 163 in the cylindrical portion 161 of the regulating member 139 are aligned at the same position in the front-to-rear direction. The front surface 164 and the cylindrical portion 161 of the regulating member 139 inserted into the barrel 132 of the main body member 131 are pushed into positions where the three engagement portions 163 engage with the three engagement holes 141 in the barrel 132, respectively. The three engagement portions 163 engage with the three engagement holes 141, respectively, so that the main body member 131, the light guide member 136, and the regulating member 139 are integrated to form the operation knob 13. The holding portion 165 of the regulating member 139 is inserted into the tip portion 25A of the connecting member 25, so that the connecting member 25 fixes the operation knob 13 integrally at the tip portion 25A.

The appearance of the operation knob 13 in the standby position and the details of the configuration of the operation knob 13 will be described with reference to Figure 6. In the standby position, the operation knob 13 has the front panel portion 134 positioned at approximately the same position in the front-to-rear direction as the front surface F of the housing 2 of the stove 1. Therefore, when the operation knob 13 is in the standby position (in this embodiment, the burner is turned off and the stove 1 is not being used for cooking, etc.), the appearance from the front of the stove 1 can be made to look flat and unified, with the operation knob 13 being inconspicuous.

As shown in the W1 region of FIG. 6, when the main body member 131, the light guide member 136, and the regulating member 139 are integrated to form the operation knob 13, the reverse flange portion 151 of the light guide member 136 protrudes radially inward from the rear end portion 133 of the body portion 132 of the main body member 131. That is, the reverse flange portion 151 of the light guide member 136 abuts against the rear end portion 133 of the body portion 132 of the main body member 131. In addition, the flange portion 162 of the regulating member 139 protrudes radially outward from the rear end portion of the cylindrical portion 161 behind the reverse flange portion 151 of the light guide member 136. Therefore, in the operation knob 13, the reverse flange portion 151 of the light guide member 136 is sandwiched in the front-rear direction between the rear end of the body portion 132 of the main body member 131 and the flange portion 162 of the regulating member 139. This prevents the light guide member 136 from shifting in the front-to-rear direction in the body portion 132 of the main body member 131.

The heat display on the operation knob 13 will be described with reference to Figs. 7 to 9. In Figs. 7 to 9, the operation knob 13 is in the operation position. The light source board 60 is installed in a tilted state so that the mounting surface on which the LEDs 61 are mounted faces downward rather than forward. All of the multiple LEDs 61 on the light source board 60 are turned on when the safety valve is opened. The multiple LEDs 61 emit light perpendicular to the mounting surface. Therefore, the light emitted from the LEDs 61 is directed diagonally downward from the light source board 60 toward the upper part of the rear end of the operation knob 13. By using multiple LEDs 61, the light source board 60 can emit stronger light toward the rear end of the operation knob 13 than when a single light source such as a single LED is used.

As described above, when the operation knob 13 is in the operating position, the flame adjustment cam 26 is connected to the operation knob 13 and adjusts the flame of the rear burner 6 in response to the rotation of the operation knob 13. When the operation knob 13 rotates, the cylindrical body 70 rotates around the axis AX together with the flame adjustment cam 26 via the cylindrical body operating member 36. The main body 71 of the cylindrical body 70 blocks the emitted light of the LED 61 from the rear end of the operation knob 13, except for the position where the light passing portion 77 is provided. The emitted light of the LED 61 passes through the position where the light passing portion 77 is provided, and the emitted light reaches the upper part of the rear end of the operation knob 13. When the operation knob 13 is rotated to change the flame, the light passing portion 77 moves circumferentially around the axis AX, so that the range where the emitted light of the LED 61 reaches the rear end of the operation knob 13 changes.

As described above, when the operation knob 13 is in the standby position, the front plate portion 134 of the main body member 131 is disposed at a position that is approximately the same as the front surface F in the front-rear direction, and the entire light guide member 136 is disposed behind the decorative panel 80 (behind the front surface F of the housing 2). Therefore, when the operation knob 13 is in the standby position, the user cannot see the light guide member 136. On the other hand, when the operation knob 13 moves from the standby position through the pressed position to the operating position, most of the main body member 131 of the operation knob protrudes forward from the front surface F. Accordingly, as shown in the W2 region in FIG. 9, the tip portion of the extension portion 138 is disposed to protrude forward from the front surface of the decorative panel 80. Therefore, when the operation knob 13 is in the operating position, the user can see the tip portion of the extension portion 138 of the light guide member 136.

8 and 9, the rear end of the operation knob 13 is covered in a ring shape by the mounting portion 137 of the light guide member 136. The light emitted from the LED 61 passing through the light passing portion 77 irradiates the portion of the mounting portion 137 corresponding to the position where the light passing portion 77 is arranged. The light irradiating the mounting portion 137 enters the inside of the light guide member 136 from the end face of the mounting portion 137, the entering light is diffused inside the light guide member 136, and the diffused light is guided to the protrusion 138A. Therefore, the protrusion 138A arranged near the portion of the mounting portion 137 where the emitted light from the LED 61 reaches emits light. On the other hand, the light emitted from the LED 61 does not enter the portion of the mounting portion 137 corresponding to the position where the light passing portion 77 is not arranged, so the protrusion 138A corresponding to that portion does not emit light. Therefore, as the operating knob 13 is rotated to change the heat level, the range in which the light emitted from the LED 61 reaches the mounting portion 137 of the light-guiding member 136 changes.

The extension 138 has multiple protrusions 138A, so that the protrusions 138A arranged in front of the part of the mounting part 137 where the emitted light of the LED 61 reaches emit light, and the protrusions 138A in the part where the emitted light does not reach do not emit light. That is, each of the protrusions 138A emits light independently according to the flame power of the rear burner 6. The wider the range where the emitted light of the LED 61 reaches the mounting part 137, the more the number of the emitting protrusions 138A increases. Also, the narrower the range where the emitted light reaches the mounting part 137, the fewer the number of the emitting protrusions 138A. Therefore, the operation knob 13 can indicate the degree of the flame power of the rear burner 6 corresponding to the amount of rotation of the operation knob 13 by the range where the extension 138 emits light (the number of emitting protrusions 138A) in the upper part of the body 132 of the operation knob 13.

In this embodiment, the stronger the flame power of the rear burner 6, the wider the range over which the light emitted by the LED 61 reaches the mounting part 137, and the wider the range over which the extension part 138 emits light (the more the number of the emitting protrusions 138A). Also, the weaker the flame power of the rear burner 6, the narrower the range over which the light emitted by the LED 61 reaches the mounting part 137, and the narrower the range over which the extension part 138 emits light (the fewer the number of the emitting protrusions 138A). Therefore, the stove 1 allows the user to intuitively grasp the flame power of the rear burner 6 based on the range over which the extension part 138 emits light. The body part 132 of the operation knob 13 in the operating position is located forward of the front face F (see FIG. 1) of the housing 2 of the stove 1. A user who uses the stove 1 for cooking, etc. can recognize the flame power of the rear burner 6 by looking down from above at the emitting range of the extension part 138 on the body part 132 while in a cooking position.

Since the operation knob 13 has a plurality of flat surfaces 143, the user can firmly grasp the operation knob 13 during the rotation operation and adjust the flame power with precision. The protrusions 138A in the extension portion 138 of the light guide member 136 and the plurality of flat surfaces 143 give the impression of extending in a line in the front-rear direction in the operation knob 13, improving the aesthetics of the operation knob 13. In addition, as shown in the W2 region of FIG. 9, when the operation knob 13 is in the operation position, the engagement hole 141 in the body portion 132 of the main body member 131 and the engagement portion 163 of the regulating member 139 that engages with the engagement hole 141 are located behind the front surface (front surface F) of the decorative panel 80. Therefore, the engagement hole 141 and the engagement portion 163 are not visible to the user who rotates the operation knob 13 in the operation position. By devising such an arrangement of the engagement holes 141 and engagement parts 163, the stove 1 can avoid compromising its aesthetic appearance even if it has the engagement holes 141 and engagement parts 163.

The light-transmitting section 81 (see Figs. 7 and 9) provided in front of the light source board 60 in the decorative panel 80 emits light emitted from the LED 61 and incident from the rear through the notch 54 (see Fig. 3) of the upper part 52 of the panel main body 50 to the front from the front surface of the decorative panel 80. The light-transmitting section 81 can notify the user that the rear burner 6 is igniting by emitting the light of the LED 61. The LEDs 61 of the light source board 60 are also lit when an error occurs in the stove 1 when the safety valve is closed. In this case, the light-transmitting section 81 can notify the user that an error occurs in the stove 1 by emitting the light of the LED 61. When the safety valve is closed, the operation knob 13 is in the standby position, and the light-guiding member 136 does not display the flame power of the rear burner 6, so the user will not mistakenly believe that an error has occurred in the stove 1 and that the rear burner 6 is igniting.

As described above, the main body member 131 has three engagement holes 141 in the barrel 132. The restricting member 139 has three engagement portions 163 in the tubular portion 161. When the tubular portion 161 is inserted from the rear into the barrel 132 to which the light-guiding member 136 is attached, the three engagement portions 163 in the tubular portion 161 engage with the three engagement holes 141 in the barrel 132, respectively. As a result, the main body member 131, the light-guiding member 136, and the restricting member 139 are integrated to form the operation knob 13. In the operation knob 13, the reverse flange portion 151 of the light-guiding member 136 protrudes radially inward from the rear end portion 133 of the barrel 132 of the main body member 131. The flange portion 162 of the regulating member 139 protrudes radially outward from the rear end of the cylindrical portion 161 behind the reverse flange portion 151 of the light guiding member 136. This causes the reverse flange portion 151 of the light guiding member 136 to be sandwiched between the flange portion 162 and the rear end of the body portion 132 in the front-rear direction. Therefore, the positional deviation of the light guiding member 136 in the front-rear direction relative to the main body member 131 is regulated. The stove 1 can prevent the positional deviation of the light guiding member 136 by simply forming the operation knob 13 by integrating the main body member 131, the light guiding member 136, and the regulating member 139 by devising the shapes of the main body member 131, the light guiding member 136, and the regulating member 139.

In the operation knob 13, the mounting portion 137 and the extension portion 138 of the light guide member 136 are inserted into the recess 142 provided in the barrel 132 of the main body member 131. This prevents the light guide member 136 from being misaligned relative to the barrel 132 of the main body member 131 as it rotates in the circumferential direction of the barrel 132.

The recess 142 has a plurality of recesses 142A. Each of the recesses 142A is recessed radially inward of the body 132 with respect to the outer circumferential surface of the body 132. Each of the recesses 142A is formed to extend circumferentially at equal intervals from the rear end of the body 132 forward. The extension portion 138 of the light guide member 136 has a plurality of protrusions 138A that protrude forward from the mounting portion 137 at equal intervals in a comb-tooth shape. The mounting portion 137 connects the rear portions of the plurality of protrusions 138A so that the intervals are the same as the intervals between the plurality of recesses 142A in the recess 142 of the main body member 131. The plurality of protrusions 138A are provided in accordance with the shapes of the plurality of recesses 142. When the light guide member 136 is inserted from the rear into the inside of the recess 142 of the main body member 131, each of the multiple protrusions 138A of the extension portion 138 is inserted from the rear toward the front into each of the multiple recesses 142A. This restricts the light guide member 136 from rotating in the circumferential direction of the body portion 132 relative to the body portion 132 of the main body member 131. Therefore, the stove 1 can prevent the light guide member 136 from shifting in the circumferential direction relative to the body portion 132.

The stove 1 has multiple flat surfaces 143 on the light guide member 136 of the main body member 131 of the operation knob 13, which makes it difficult for the fingers gripping the operation knob 13 to slip when the user rotates the operation knob 13 in the operating position, improving the operability of the operation knob 13. The stove 1 also prevents the light guide member 136 from shifting in the circumferential direction relative to the body 132, even when the operation knob 13 is rotated. The protrusions 138A on the extensions 138 of the light guide member 136 and the multiple flat surfaces 143 give the impression that the operation knob 13 extends in a line in the front-to-rear direction, improving the aesthetic appearance of the operation knob 13.

When the operating knob 13 is in the operating position, the engaging hole 141 in the trunk 132 of the main body member 131 and the engaging portion 163 of the restricting member 139 that engages with the engaging hole 141 are located behind the front surface (front surface F) of the decorative panel 80. Therefore, the engaging hole 141 and the engaging portion 163 are not visible to a user who is rotating the operating knob 13 in the operating position. Therefore, the aesthetic appearance of the stove 1 is prevented from being disturbed.

In this embodiment, the stove 1 corresponds to the "stove" of the present invention. The decorative panel 80 corresponds to the "front panel" of the present invention. The operation knobs 11, 12, 13, and 14 correspond to the "on/off button" of the present invention. The main body member 131 corresponds to the "main body member" of the present invention. The front plate portion 134 corresponds to the "front plate" of the present invention. The body portion 132 corresponds to the "body portion" of the present invention. The engagement hole 141 corresponds to the "engagement hole" of the present invention. The LED 61 of the light source board 60 corresponds to the "light emitting portion" of the present invention. The light guide member 136 corresponds to the "light guide member" of the present invention. The mounting portion 137 corresponds to the "mounting portion" of the present invention. The extension portion 138 corresponds to the "extension portion" of the present invention. The reverse flange portion 151 corresponds to the "reverse flange portion" of the present invention. The restricting member 139 corresponds to the "restricting member" of the present invention. The cylindrical portion 161 and the front portion 164 correspond to the "insertion portion" of the present invention. Flange portion 162 corresponds to the "flange portion" of the present invention. Engagement portion 163 corresponds to the "engagement portion" of the present invention. The multiple recesses 142A correspond to the "multiple recesses" of the present invention. The multiple protrusions 138A of extension portion 138 correspond to the "multiple extension portions" of the present invention. The multiple flat portions 143 correspond to the "multiple flat portions" of the present invention.

The present invention is not limited to the above embodiment, and various modifications are possible. For example, the flange portion 162 does not need to protrude radially outward from all parts of the rear end of the cylindrical portion 161. It is sufficient that the flange portion 162 protrudes radially outward from at least a part of the rear end of the cylindrical portion 161. In this case, it is preferable that the flange portion 162 protrudes radially outward from at least three parts of the rear end of the cylindrical portion 161.

The extension portion 138 of the light guide member 136 may not have a protrusion 138A, but may extend annularly forward from the mounting portion 137 on the body 132 of the operation knob 13.

The front plate portions 134, 144 of the operation knob 13 do not need to be perfectly circular when viewed from the front, but may be shaped to approximate a circle. For example, the front plate portions 134, 144 may be oval shapes that are slightly distorted from a circle, or may be polygonal shapes that approximate a circle.

The operating knob 13 may be placed in the operating position in cases other than after the ignition operation has ended. For example, the operating knob 13 may be placed in the operating position during the period between the end of the extinguishing operation and the start of the ignition operation (when the burner is extinguished and the stove 1 is not being used for cooking, etc.).

For example, the width of the front end of the main body 71 cut out in the circumferential direction as the light passing portion 77 may be wider or narrower than that of the above embodiment. For example, the width of the front end of the main body 71 cut out in the circumferential direction as the light passing portion 77 may be approximately the same as the circumferential width of one protrusion 138A of the extension portion 138. In this case, as the operation knob 13 is rotated to change the flame power, the position at which the emitted light of the LED 61 reaches the mounting portion 137 of the light guide member 136 arranged at the rear end of the operation knob 13 changes, and one protrusion 138A corresponding to the position of the mounting portion 137 where the emitted light reaches is illuminated. Therefore, the operation knob 13 can indicate the flame power of the rear burner 6 by changing the position at which the extension portion 138 of the light guide member 136 emits light (the position at which one protrusion 138A emits light).

The operating knob 13 does not need to be completely cylindrical. For example, the body portion 132 of the main body member 131 of the operating knob 13 may be gradually tapered from the rear end portion 133 toward the front plate portion 134.

The stove 1 is a built-in type gas stove, but the stove 1 may also be a gas table stove or a cassette type gas stove, etc., in which the flame power is adjusted by turning the control knob 13.

In stove 1, it is not necessary for all of operation knobs 11, 12, 13, and 14 to display the flame power using light-guiding member 136 on their outer periphery. For example, if the flame power of the grill burner can be adjusted in multiple steps rather than continuously, each of the multiple steps may be displayed by the light emitted from extension 138 of light-guiding member 136 of operation knob 12, or light-guiding member 136 may not be provided on operation knob 12.

When the operating knob 13 is in the operating position, the amount by which the extension 138 is exposed forward of the decorative panel 80 may be an amount that allows a user using the stove 1 to see part of the extension 138. Therefore, the amount by which the extension 138 is exposed forward of the decorative panel 80 can be changed as desired depending on the appearance of the flame power display by the light-guiding member 136, and may be more or less than in the above embodiment.

In the above embodiment, when the operation knob 13 is in the operating position, the teeth 38 of the connecting member 25 engage with the teeth 35 of the flame adjustment cam 26, and when the operation knob 13 is in the standby position, the teeth 38 of the connecting member 25 do not engage with the teeth 35 of the flame adjustment cam 26. For example, the teeth 38 of the connecting member 25 may be configured to engage with the teeth 35 of the flame adjustment cam 26 regardless of the position of the operation knob 13. In this case, the light guide member 136 may be provided only on the portion of the body 132 of the operation knob 13 that is located on the upper side. In other words, the mounting portion 137 may be shaped to cover a part of the rear end portion 133 of the body 132.

1 Stove 4 Right burner 5 Left burner 6 Back burner 11, 12, 13, 14 Operation knob 60 Light-emitting unit 61 LED
80 decorative panel 131 main body member 132 trunk portion 134 front plate portion 136 light guide member 137 mounting portion 138 extension portion 138A protrusion portion 139 regulating member 141 engagement hole 142 recess 142A recess 143 flat portion 151 inverse flange portion 161 cylindrical portion 162 flange portion 163 engagement portion 164 front portion

Claims (5)

A stove equipped with a burner ignition/extinction button that is used for igniting and extinguishing a burner and that protrudes forward from a front panel at least after the ignition operation is completed,
The extinguishing button is
A body member;
a light guide member that receives light irradiated from the light emitting unit and emits light;
a regulating member that regulates a positional deviation of the light guiding member with respect to the main body member,
The body member includes:
A front plate portion having a circular shape when viewed from the front;
A cylindrical body portion extending rearward from a peripheral edge portion of the front plate portion,
The body portion is provided with an engagement hole,
The light guiding member is
A mounting portion attached to a rear end portion of the body portion;
An extension portion is provided extending forward from the mounting portion and disposed on an outer circumferential surface of the body portion,
The mounting portion is provided with a reverse flange portion that protrudes radially inwardly of the body portion relative to the extension portion,
The regulating member is
a cylindrical insertion portion that is inserted into the trunk portion from an opening on the rear side of the main body member;
a flange portion extending radially outward from a rear end portion of the insertion portion,
The insertion portion is provided with an engagement portion that engages with the engagement hole,
When the mounting portion is mounted to the rear end portion of the body portion from the rear, the extension portion is disposed on the outer circumferential surface of the body portion and the reverse flange portion is in contact with the rear end portion of the body portion.
This stove is characterized in that when the insertion portion is inserted into the barrel of the main body member and pushed into a position where the engagement portion engages with the engagement hole, the regulating member clamps the reverse flange portion between the flange portion and the rear end portion of the barrel from the front and rear directions. The stove according to claim 1, further comprising a rotation restricting means for restricting the rotation of the light guide member in a circumferential direction relative to the body portion. A plurality of recesses are provided at the rear end of the body portion, the recesses being formed at equal intervals in a circumferential direction and recessed radially inward with respect to the outer circumferential surface of the body portion,
The extension portion is provided in a plurality of portions corresponding to the shapes of the plurality of recesses, and can be inserted from the rear to the front into the inside of the plurality of recesses,
the mounting portion covers the rear end portion of the body portion in an annular shape and connects rear portions of the extension portions to the recesses in a circumferential direction so as to be spaced at equal intervals therebetween,
The stove according to claim 2 , wherein the plurality of recesses and the plurality of extensions function as the rotation restricting means. The stove adjusts the amount of gas supplied to the burner by rotating the ignition/extinction button in a position protruding forward from the front panel when the burner is in a combustion state,
The stove described in claim 3, characterized in that on the outer surface of the body, in front of each of the multiple recesses, there are provided a plurality of flat surfaces extending in the front-to-rear direction, the flat surfaces having circumferential widths corresponding to the widths of each of the multiple recesses and having faces facing radially outward. A stove as described in any one of claims 1 to 4, characterized in that the engagement hole and the engagement portion are located rearward of the front surface of the front panel when the ignition/extinguishing button protrudes forward of the front panel.

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